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ZnO-B_(2)O_(3)-SiO_(2) 玻璃对ZnO线性电阻陶瓷结构及电学性能的影响
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作者 陈芳 鲁加加 +1 位作者 李良锋 马雪 《西南科技大学学报》 CAS 2024年第2期40-47,共8页
ZnO线性电阻陶瓷是具有较小的阻温系数和非线性系数且耐受能量较大的新型电气元件。以ZnO-B_(2)O_(3)-SiO_(2)(ZBS)玻璃为烧结助剂,采用固相烧结法制得ZnO线性电阻陶瓷,研究了ZBS掺量对ZnO线性电阻陶瓷体系烧结温度、物相组成、微观结... ZnO线性电阻陶瓷是具有较小的阻温系数和非线性系数且耐受能量较大的新型电气元件。以ZnO-B_(2)O_(3)-SiO_(2)(ZBS)玻璃为烧结助剂,采用固相烧结法制得ZnO线性电阻陶瓷,研究了ZBS掺量对ZnO线性电阻陶瓷体系烧结温度、物相组成、微观结构以及电学性能的影响。结果表明:当ZBS玻璃掺杂质量分数为0.5%、烧结温度为1150℃时,ZnO线性电阻陶瓷具有最佳的综合性能,其体积密度为5.070 g/cm^(3),相对密度为95.85%,电阻率为1406.6Ω·cm,非线性系数为1.06,电阻温度系数为3.88×10^(-4)℃^(-1)。ZBS玻璃掺杂烧结工艺实现了ZnO线性电阻在1150℃的低温烧结。 展开更多
关键词 zno线性电阻陶瓷 ZBS玻璃 微观结构 线性系数 阻温系数
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Comparative characteristics of yttrium oxide and yttrium nitric acid doping in ZnO varistor ceramics 被引量:4
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作者 徐东 唐冬梅 +3 位作者 焦雷 袁宏明 赵国平 程晓农 《Journal of Central South University》 SCIE EI CAS 2012年第8期2094-2100,共7页
The effect of different molar ratios of Y2O3 and Y(NO3)3 on the microstructure and electrical response of ZnO-Bi203-based varistor ceramics sintered at 1 000 ℃ was investigated, and the mechanism by which this dopi... The effect of different molar ratios of Y2O3 and Y(NO3)3 on the microstructure and electrical response of ZnO-Bi203-based varistor ceramics sintered at 1 000 ℃ was investigated, and the mechanism by which this doping improves the electrical characteristics of ZnO-Bi203-based varistor ceramics was discussed. With increasing amounts of Y(NO3)3 or Y2O3 in the starting composition, Y2O3, Sb204 and Y-containing Bi-rich phase form, and the average grain size significantly decreases. The average grain size significantly decreases as the contents of rare earth compounds of Y(NO3)3 or Y2O3 increase. The maximum value of the nonlinear coefficient is found at 0.16% Y(NO3)3 or 0.02% YaO3 (molar fraction) doped varistor ceramics, and there is an increase of 122% or 35% compared with the varistor ceramics without Y(NO3)3 or Y2O3. The threshold voltage VT of Y(NO3)3 and Y2O3 reaches at 1 460 V/mm and 1 035 V/ram, respectively. The results also show that varistor sample doped with Y(NO3)3 has a remarkably more homogeneous and denser microstructure in comparison to the sample doped with Y2O3. 展开更多
关键词 CERAMICS VARISTOR rare earth microstructure electrical properties
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电子元件、组件
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《中国无线电电子学文摘》 1995年第6期59-65,共7页
关键词 电子元件 压敏电阻 产品可靠性 烧银工艺 电子技术应用 电阻 中国科学院 zno陶瓷线性电阻 氧化锌压敏电阻 可调范围
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